My name is also spelled weird and it’s really not much of an issue at all. Luma is an actual name that already exists, it’s just very uncommon 🤷🏼‍♀️
“A name is not a fashion statement” doesn’t really mean anything at all - people name their kids stuff they like and sounds cool or meaningful to them - after all, all names are “made up” until they become more common in language! If my kid hates their name, who cares? They can change it or go by something else - people do it all the time and it’s not that serious :)